0024230: TKOpenGl - request debug context by default in debug mode

Enable GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB only for debug builds.

src/OpenGl/OpenGl_Caps.cxx

@@ -30,7 +30,11 @@ OpenGl_Caps::OpenGl_Caps()
 : vboDisable        (Standard_False),
   pntSpritesDisable (Standard_False),
   contextStereo     (Standard_False),
+#ifdef DEB
+  contextDebug      (Standard_True),
+#else
   contextDebug      (Standard_False),
+#endif
   contextNoAccel    (Standard_False)
 {
   //

src/OpenGl/OpenGl_Context.cxx

@@ -634,7 +634,9 @@ void OpenGl_Context::init()
     {
       // setup default callback
       arbDbg->glDebugMessageCallbackARB (debugCallbackWrap, this);
+    #ifdef DEB
       glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
+    #endif
     }
   }